This code is unsupported.
Since it's original home seems to be no longer around,
I put it here in case it might be useful to someone.
Feel free to fork and work on it.

(Or you might be interested in http://www.network-weathermap.com)

- nyov

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Network Weathermap
version 1.1.1 (20040422)

A perl tool that displays in a visual way the utilization of the
network links of your network. The required data are acquired from
graphs created by the MRTG package and are displayed as two ways
colored arrows on a map representing the logical topology
of the network. 

See INSTALL file for the installation and configuration guide.

See http://netmon.grnet.gr/weathermap/ for updates.

The Network Weathermap is developed by Panagiotis Christias
<p.christias@noc.ntua.gr>.  It may be used, modified and redistributed
only under the terms of the GNU General Public License, found in the
file LICENSE in this distribution, or at 

  http://www.fsf.org/licenses/gpl.html